Yokogawa AAB841-S00 – Analog I/O Module with 8 Inputs and 8 Outputs

The Yokogawa AAB841-S00 is an analog I/O module. Specifically, this module provides 8 input channels and 8 output channels. The inputs accept 1 to 5 V signals. The outputs deliver 4 to 20 mA signals. Furthermore, the module is non-isolated with differential input design. Consequently, it suits compact control systems requiring both analog input and output in one unit.

Ordering Configuration and Model Identification

• Model: AAB841 Analog I/O Module.

• Suffix Code -S: Standard type.

• Suffix Code 0 (First): No explosion protection.

• Suffix Code 0 (Second): Basic type.

• Product Description: 1 to 5 V input, 4 to 20 mA output, 8-channel input/8-channel output, non-isolated.

• Single Configuration: ATA4S.

• Dual Redundant Configuration: ATA4D.

• Adapters: ATK4A, ATM4A, ATV4A.

• Cables: KS1, KS2.

• Terminal Boards: AEA4D, MCM, MHM, MUB, TE16, MHC.

• Therefore, the Yokogawa AAB841-S00 offers flexible system integration options.

Input Channel Specifications (1 to 5 V)

• Number of Input Channels: 8 channels total.

• Input Signal Type: 1 to 5 V differential input.

• Allowable Common Mode Voltage: ±1 V or less.

• Allowable Input Current: ±7.5 V maximum.

• Input Resistance (Power ON): 1 MΩ or larger.

• Input Resistance (Power OFF): 340 kΩ or larger.

• Input Accuracy: ±16 µA equivalent.

• Input Step Response Time: 100 milliseconds.

• Thus, the AAB841-S00 provides stable voltage input measurement.

Output Channel Specifications (4 to 20 mA)

• Number of Output Channels: 8 channels total.

• Output Signal Type: 4 to 20 mA current.

• Allowable Load Resistance: 0 to 750 Ω.

• Circuit-Open Detection Threshold: Less than 0.65 mA.

• Output Accuracy: ±48 µA.

• Output Step Response Time: 40 milliseconds.

• Data Update Period: 10 milliseconds (overall module).

• Consequently, the Yokogawa AAB841-S00 drives a wide range of field devices.

Transmitter Power Supply

• Transmitter Supply Voltage (at 20 mA): 14.8 V or higher.

• Transmitter Supply Voltage (at 0 mA): 26.4 V or less.

• 2-Wire or 4-Wire Setting: Per channel via setting pin.

• Application: Powers connected field transmitters directly.

• Flexibility: Individual channel configuration for mixed 2-wire and 4-wire devices.

• Therefore, the AAB841-S00 reduces external power supply requirements.

Accuracy and Temperature Drift

• Input Accuracy: ±16 µA.

• Output Accuracy: ±48 µA.

• Temperature Drift: ±0.1% per 10°C.

• Data Update Period: 10 milliseconds.

• Response Times: 100 ms (input step), 40 ms (output step).

• Thus, the Yokogawa AAB841-S00 maintains precision across temperature variations.

Current Consumption and Power Requirements

• 5V DC System Current: 310 mA maximum.

• 24V DC System Current: 250 mA maximum.

• Module Type: Non-isolated differential input.

• Power Supply: Derived from system backplane.

• Consequently, the AAB841-S00 requires moderate power for full 16-channel operation.

External Connection Options

• Pressure Clamp Terminal: Yes, supported.

• KS Cable: Yes, supported.

• MIL Connector Cable: Yes, supported.

• Dual Redundancy Support: ATA4D configuration available.

• Terminal Board Options: AEA4D, MCM, MHM, MUB, TE16, MHC.

• Adapter Options: ATK4A, ATM4A, ATV4A.

• Therefore, flexible wiring options suit various installation requirements.

Installation Guide

First, verify that the system power is disconnected. Then, select the appropriate terminal board for your application (AEA4D, MCM, MHM, MUB, TE16, or MHC). After that, mount the Yokogawa AAB841-S00 into the designated I/O slot. For dual redundant operation, use ATA4D configuration with two modules. Next, connect your input signals (1 to 5 V) to the 8 input channels. Ensure common mode voltage stays below ±1 V. Then, connect your output loads (4 to 20 mA) to the 8 output channels. Verify load resistance stays between 0 and 750 Ω. For 2-wire transmitters, configure the setting pin per channel. For 4-wire transmitters, adjust the pin setting accordingly. Subsequently, connect system power (5V and 24V) to the backplane. Finally, power on the system and verify I/O operation. As a result, the Yokogawa AAB841-S00 will provide reliable analog I/O functionality.

Packaging List

• One Yokogawa AAB841-S00 analog I/O module

• One pressure clamp terminal block (or MIL connector per order)

• One setting pin kit for 2-wire/4-wire configuration

• One product identification label

• One installation and configuration guide

Common FAQs

Q1: How many input and output channels does the AAB841-S00 provide?
A: This module provides 8 input channels and 8 output channels. Specifically, inputs are 1 to 5 V differential signals. Outputs are 4 to 20 mA current signals. Therefore, 16 total I/O points are available.

Q2: Is the Yokogawa AAB841-S00 isolated?
A: No, this module is non-isolated. Specifically, it features differential input design. The allowable common mode voltage is ±1 V or less. For isolated applications, consider other Yokogawa I/O modules.

Q3: What is the data update period for this module?
A: The data update period is 10 milliseconds. Input step response time is 100 milliseconds. Output step response time is 40 milliseconds. Consequently, it suits moderate-speed control applications.

Q4: Can I use the AAB841-S00 with 2-wire transmitters?
A: Yes, the module provides transmitter power. The supply voltage is 14.8 V or higher at 20 mA. Setting pins configure each channel for 2-wire or 4-wire transmitters individually.

Q5: What external connection options exist for the Yokogawa AAB841-S00?
A: Three connection types are available. Pressure clamp terminal blocks are supported. KS cables and MIL connector cables also work. Additionally, multiple terminal boards (AEA4D, MCM, MHM, MUB, TE16, MHC) are compatible.